【SIZE】These are 60mm X 30MM X 10MM (OD2.35" x ID1.25" x 10mm) standard tolerance ferrite magnets. 【WORKMANSHIP】Ceramic magnets made by molding process have more rounded edges than those cut by cutting, and are made of rare earth permanent magnetic materials mixed with other metal materials. 【ECONOMICAL】Compared with NdFeB magnets, ferrite magnets have no advantages in magnetic force, but magnets of the same size (compared with NdFeB magnets) sell for only a small part 【MULTIPURPOSE】It can be used in a variety of application scenarios, such as manual, scientific, educational, industrial machinery, etc 【BUY】If you are not satisfied with the purchase or have any questions about the return of products (please contact us, and we will provide you with satisfactory services） It is 60mmODx30mmIDx10mm-2pcs ring Ferrite magnets,Grade 12 Made of high-quality materials!